Hydrocarbon burner



Jan. 11, 1927. l 1,614,045

lc. A. RoslER HYDROCARBQN BURNER Filed July 9. 1924 BY I Z5@ 4,5 i l" J4 v %0RNEY atented Jan. l1, 1927.

UNITED STATES CHARLES A. ROSTER, 0F NEW YORK, N. Y.

HYDROCARBON BURNER.

Application led J'uly 9,

This invention relates to hydrocarbon burners, and more particularly to means for automatically controlling the operating o hydrocarbon burner equipment installed in heat generators such as boilers or tempering furnaces and the like.

An object of the invention is the provision of means of the character described for economically regulating the combustion of the fuel to vary with the load requirement.

Another object of the invention is the provision of an automatic control means for hydrocarbon burner boiler equipment which is simple in operation, and effective to keep the steam pressure of a boiler practically constant and to regulate the. said equipment for conditioning and feeding the fuel to obtain highly eiicient combustion.

A further object of the invention is the provision of means of the character described, which operates with minimum attention and which is composed of few and simple parts that are easy to install and relatively cheap to manufacture.

Other objects of this invention will in part {be obvious and in part hereinafter pointed out.

Certain features herein shown and described are shown, described and claimed in my co-pending application Serial No. 585,337, filed in the United States Patent Oce on the 31st day of August 1922, and Serial No. 724,963 filed July 9th, 1924, and accordingly not claimed herein.

vWith the above exception, the invention'.

accordingly consists in the features of construction, combinations of elements and arrangement of parts which will be exemplified in the Iconstruction hereinafter described and of which the scope of application will be indicated in the following claims.

In lthe accompanying drawings, in which is shown one of the various possible illustrative embodiments of this invention,

Fig. 1 is a vertical section of a hydrocarbon burner equipped with automatic control means embodying this invention;

Fig. 2 is a front elevational view of the valve and damper control means shown in F ig. 1; and i Fig: 3 is a side elevational view of equipment shown in Fig. 1 with automatic control means by steam boiler pressure.

The control device embodying my invention may be installed to co-operate with any 1924. Serial No. 724,964.

hydrocarbon burner equipment and is shown in the accompanying drawing as applied to f the type of carbon burner fully 'described 1n my said co-pending application Serial No. 585,337 filed August 31st, 1922.

Referring in detail to the drawing, 10 denotes a fragmentary portion of a boiler having a furnace combustion chamber 10a to which is attached the hydrocarbon burner equipment 11 by any 4suitable means such as frame 12.

The hydrocarbon burner equipment 11 comprises, as is seen from Fig. 1, an atomizing and spraying burner portion 13 and a fuel vaporizinff and preheating portion 14 disposed therebelow, the burner outlet end of portion 13 being adapted to communicate with portion 14 by means of a passage 15.

The portion 14 comprises a tubular member 16 divided into two compartments 17 and 18 by a baffle plate 19 extending longitudinally of the member 16. The lower compartment is adapted to vaporize and permit the expansion of the fuel oil entering at the front end 21 thereof, from a passage 22, which connectswith the outlet side of an oil control angle valve 23, the latter receiving fuel from an oil storage tank (not shown) through a pipe 24. Valve 23 is controlled in the usual manner through the rotation of the valve stem 23a. Means for draining the lower compartment is provided at 25, which connects with discharge pipe 25a which may be opened and closed in any suitable manner.

The upper compartment 18 serves to preheat thepvaporized fuel and is provided at its front end with an upwardly extending passage 26 for leading the oil vapors into the inlet side of a mixing valve 27 from which they emerge through opening 27a into a mixing chamber 28. The valve 27 controls the flow of the oil vapors in the usual manner through the-rotation of the valve stem 27". To condition the oil vapors for most eiicient combustion, lsuitable amounts of steam or compressed air are )rovided from a source (not shown) through a pipe line 49 and injected into said vapors.' For the purpose of controlling the supply of steam or air, there is installed in pipe line 49 a valve 29 having'the outlet side thereof connecting with a passage 30 which extends vertically upward from said valve 27, the lower end of said passage 30 joining an an nular passage 3.1 formed said valve 29.

Said passage 31 leads into the chamber 28 through openings 31a, so that an intimate mixture of the oil vapors and steam or compressed air is obtained upon emerging of the mixture from the burner outlet 32.

Valve 29 is controlled by rotating valve stem 29a the latter being mounted to turn in the valve body 29b on left-handed threaded connection having a coarse pitch; the purpose of which will hereinafter appear.

It is clear from the drawing that part of the heat generated in the furnace serves to heat up tube 16, particularly by reverberation through the passage 15. AFor effectively and positively controlling the temperature to which the oil is subjected during the vaporization and preheating in tube 16, 1 provide sector-shaped dampers 33, 34 disposed horizontally over the tube 16 between the latter and the passage 15. The dampers are movably mounted to provide a variable opening 35 between them wherethrough heat is transmitted to impinge on the tube 16, said dampers 33, 34 being respectively supported from the upper end of arms 36, 37, which are secured at their opposite ends respectively to rock shafts 38, 39, having operating levers 40, 41. The dampers 33, 34 may be rocked toward or away' from each other to varly the size of the opening 35 l thereby regu ating the degree `of heating of tube 16.

Forstarting the hydrocarbon burner, I provide a receptacle 43 supported below the tube 16 which is adapted to hold a suitable liquid fuel such as alcohol, which is burned to supply the initial heat to the tube 16 for raising it to the required temperal ture to vvaporize and fpreheat the oil.

The normal operation of the equipment above described is as follows: The liquid fuel is'fed through valve 23 into the heated tube 16 where it is vaporized and expanded in compartment 17 and the vapors are preheated in compartment 18. From the latter the heated vapors pass up along passage 26 and through valve 27 into chamber 28V which they mix with the steam or compressed air coming through the valve 29, the resulting mixed fuel thereafter being sprayed and atomized into the furace combustion chamber 10a.

1n the foregoing description of the apparatus and -its operation, no special means have been described for operating the valves and dampers for regulating control thereof, and under ordinary conditions, this requires manual manipulation. the invention will now be described which provides automatic means for efficiently controlling the operation of a hydrocarbon equipment to regulate the steam pressure of boiler 10.

Any conventional type of diaphragm pressure regulator 50 is installed to be op- An embodiment of erated by the boiler steam pressure in the well known manner with the load carrying portion of arm 50?L extending over and substantially in alignment with the valves 23, 27 and 29, these valves, for simplicity, being preferably arranged invertical alignment as shown in Figs. 1 and 2. epending from arm 50h1 are preferably two connecting members 51 and 52, one for actuating the valves and the other for the dampers. Thus, the adjustment of each of the connecting members 51, 52, on arm 50a and hence their vertical movement may bevaried independently of the other.

As shown in Fig. 2, the lower end of member 51 is secured to a connecting link 53 which is pivoted at its lower portionto a lever arm 23h, the latter being secured to valve stem 23a for opening and closing the valves 23 on downward and upward movement respectively of said link 53. .The upper portion of said link 53 is pivotally connected to ro'ck arm 27b of a sector gear rack member 27 c secured to the valvev stem 27,

A pinion 29d is secured to the valve stem 29n and "meshes with the gear rack member 27c for opening and closing said valve 29 in unison with the valves 27. In order to compensate for the reverse turning motion given valve stem 29a with respect to that given the other valves, the stem 29a is mounted to'turn in the bodv valve '29h on the left handed threaded connection 29, the coarse pitch 'whereof gives the proper proportional opening. for admitting the steam or compressed air. The connecting link 53 may have a hole 53a in the lower end thereof on which a weight 54, shown in dotted lines in Fig. 2 mayy be hung if the weight of connecting member 51 and link 53 are insufficient to positively move the valves 23, 27 and 29 to their closed position on the lowering of arm 50a.

The lower end of member 52 `is secured to the upper end of an inverted U-shaped strap 55, which straddles the valve equipment and is connected at the lower ends thereof to free ends of lever arms 40 and 41 as shown in Fig. 2 for operating the dampers 33, 34. Y

The control means for the hydrocarbon burner above described may be set to keep the steam pressure at a constant required amount by suitable well known means such as an adjustable spring or weight 50b on ldiaphragm regulator 50 as shown in F ig. 3.

rI`he operation of the automatic control means to maintain constant steam pressure is`as follows: The lowering ofthe steam pressure below that requiredilowers the regulator arm 50a, which permits the link 53 to move downwardly and simultaneously opens valves 23, 27 and 29 for increasing the feed yof fuel and steam or compressed air and to control their mixture. At the same time,

strap 55 is permitted to be lowered thereby separating the dampers 33, 34 to expose more of tube 16 to effectively take care of the increased amount ofoil being fed. On raising of steam pressure above that required, the regulator arm 50 is raised and the automatic control means have the opposite effect y described above. Thus the steam pressure is kept practically at the set required amount and the fuel is fed to the burners properly conditioned for eilicient combustion.

It will thus be seen that there. is provided a device in which the several objects of this invention are achieved adapted to meet the conditions of practical use.

As various possible embodiments might be made of the above invention and as various changes might be made in the embodiment above. set forth, it is to be understood that all matter herein set forth or shown in the accompanying drawings is to be interpreted as illustrative and not in a limiting sense.

Having thus described my invention, claim as new and desire to secure by Letters Patent 1. A furnace, a liquid fuel burner equip mentfor said furnace, said equipment having regulating valves and-a fuel prevaporizing portion arranged t receive heat from the burner of said equipment,an adjustable damper for regulating the heat to said portion, in combination with a control means for simultaneously opening and closing said valves and a justing said damper.

2. In combination, a furnace, a liquid fuel burner equipment for the furnace, said and which is well.

equipment having regulating valves and a portion for vaporizing the fuel arranged to e heated b the. burner of said equipment, an adj ustab e damper for regulating the heat to said portion, and control means for simultaneously opening and closing the valves and adjusting said damper, said means having lever arms arranged to operate the valves and a link interconnecting said arms.

3. In combination, a furnace, burner equipment for the furnace, sald equipment having regulating valves and a portion for vaporizing the fuel arrangedto be heated by the burner of said equipment, an adjustable damper for regulating the heat to said rtion, and control means for simultaneous y opemng and closing the valves and adjusting said damper, said means having lever arms arranged to operate the valves, one of said arms being secured to a sector rack and pinion for operating one of the valves.

4. A control means 'for a liquid fuel burner equipment having a fuel preheating portion comprising a plurality of regulating valves, separate lever arms for operating some of the valves, a sector rack said arms, a pinion meshing with said rack mounted to operate one of said valves, a link interconnecting said arms for simultaneously regulating all the valves, a dam r for adjustably controlling the heat to said portion and means for operating the damper concomitantly with the regulation of said valves. l

In testimony whereof I aix my signature.

CHARLES A. ROSIER.

a liquid fuel secured to one of 

